MySQL and checking character set encoding
http://www.bluebox.net/about/blog/2009/07/mysql_encoding/
http://stackoverflow.com/questions/1049728/how-do-i-see-what-character-set-a-database-table-column-is-in-mysql
https://makandracards.com/makandra/2531-show-the-character-set-and-the-collation-of-your-mysql-tables